add support for fail-on-invalid-resource (#29)

.github/workflows/self-test.yml

@@ -73,3 +73,28 @@ jobs:
 
       - name: Upload SARIF output file to GitHub
         uses: github/codeql-action/upload-sarif@v3
+
+  test-fail-on-invalid-resource:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Scan 1 - should succeed
+        uses: ./
+        with:
+          directory: sample/non-kubernetes-yaml
+          config: sample/.kube-linter-config.yaml
+
+      - name: Scan 2 - should fail
+        id: failing-scan
+        uses: ./
+        with:
+          directory: sample/non-kubernetes-yaml
+          config: sample/.kube-linter-config.yaml
+          fail-on-invalid-resource: "true"
+        continue-on-error: true
+
+      - name: Verify Scan 2 should have failed
+        shell: bash
+        run: |
+          echo "Verifying that kube-linter-action outcome (${{ steps.failing-scan.outcome }}) from Scan 2 is failure."
+          [[ "${{ steps.failing-scan.outcome }}" == "failure" ]]

README.md

@@ -35,3 +35,4 @@ The workflow will fail if kube-linter detects issues. You'll find issues in the
 | `format` | (optional) | Output format. Allowed values: `sarif`, `plain`, `json`. Default is `plain`. |
 | `output-file` | (optional) | Path to a file where kube-linter output will be stored. Default is `kube-linter.log`. File will be overwritten if it exists. |
 | `version` | (optional) | kube-linter release version to use, e.g. "0.2.4". The latest available version is used by default. |
+| `fail-on-invalid-resource` | (optional) | Set `true` to error out when we have an invalid resource. |

action.yml

@@ -22,6 +22,10 @@ inputs:
     description: 'Version of kube-linter to use. E.g. "0.2.4". Default: "latest"'
     required: false
     default: 'latest'
+  fail-on-invalid-resource:
+    description: 'Error out when we have an invalid resource. Default: false'
+    required: false
+    default: 'false'
 runs:
   using: "composite"
   steps:
@@ -65,4 +69,11 @@ runs:
         else
           CONFIG="--config ${{ inputs.config }}"
         fi
-        ./kube-linter $CONFIG lint "${{ inputs.directory }}" --format "${{ inputs.format }}" | tee "${{ inputs.output-file }}"
+        
+        if [[ "${{ inputs.fail-on-invalid-resource }}" == "true" ]]; then
+          FLAG_ARGS="--fail-on-invalid-resource "
+        else
+          FLAG_ARGS=""
+        fi
+        
+        ./kube-linter $CONFIG lint "${{ inputs.directory }}" --format "${{ inputs.format }}" $FLAG_ARGS | tee "${{ inputs.output-file }}"

sample/non-kubernetes-yaml/food.yaml

@@ -0,0 +1,2 @@
+food: 
+  - vegetables: tomatoes